So I take it you don't listen to bassists like John Patitucci, Stanley Clarke, Victor Bailey, Jaco, and the list goes on and on. They write songs where the bass is the focal point. John Patiticci and Victor Bailey really opened my eyes to what can be done with a bass when used as a solo instrument. But the gist of it is, they are solo artists. At your church, you're there in a different capacity. You just have to find an environment where your fellow musicians are open to giving the bass some shine if that's what you're seeking. And more than anything, it has to fit and makes sense. The bass guitar has it's role, and that role must be played no matter what. When the groove is seriously IN THERE, the bass IS the centerpiece hands down. The groove is the foundation, and nothing can be built without laying down a foundation first.
And for the record, I've been an MD as both a bassist and drummer.